curl_multi speed for PHP

gistfile1.php

<?php

class CurlMulti
{
    // Code from http://www.somacon.com/p537.php
    public static function getMulti(array $urls)
    {
        // Create get requests for each URL
        $mh = curl_multi_init();
        foreach($urls as $i => $url)
        {
            $ch[$i] = curl_init($url);
            curl_setopt($ch[$i], CURLOPT_RETURNTRANSFER, 1);
            curl_multi_add_handle($mh, $ch[$i]);
        }

        // Start performing the request
        do {
            $execReturnValue = curl_multi_exec($mh, $runningHandles);
        } while ($execReturnValue == CURLM_CALL_MULTI_PERFORM);
        // Loop and continue processing the request
        while ($runningHandles && $execReturnValue == CURLM_OK) {
            // Wait forever for network
            $numberReady = curl_multi_select($mh);
            if ($numberReady != -1) {
                // Pull in any new data, or at least handle timeouts
                do {
                    $execReturnValue = curl_multi_exec($mh, $runningHandles);
                } while ($execReturnValue == CURLM_CALL_MULTI_PERFORM);
            }
        }

        // Check for any errors
        if ($execReturnValue != CURLM_OK) {
            trigger_error("Curl multi read error $execReturnValue\n", E_USER_WARNING);
        }

        // Extract the content
        foreach($urls as $i => $url)
        {
            // Check for errors
            $curlError = curl_error($ch[$i]);
            if($curlError == "") {
                $res[$i] = curl_multi_getcontent($ch[$i]);
            } else {
                print "Curl error on handle $i: $curlError\n";
            }
            // Remove and close the handle
            curl_multi_remove_handle($mh, $ch[$i]);
            curl_close($ch[$i]);
        }
        // Clean up the curl_multi handle
        curl_multi_close($mh);

        // Print the response data
        return $res;
    }

    // Code from http://www.php.net/manual/en/function.curl-multi-exec.php
    public static function getMulti2($url) {

        // create both cURL resources
        $ch1 = curl_init();

        // set URL and other appropriate options
        curl_setopt($ch1, CURLOPT_URL, $url);
        curl_setopt($ch1, CURLOPT_HEADER, 0);
        curl_setopt($ch1, CURLOPT_RETURNTRANSFER, 1);

        //create the multiple cURL handle
        $mh = curl_multi_init();

        //add the two handles
        curl_multi_add_handle($mh,$ch1);

        $active = null;
        //execute the handles
        do {
            $mrc = curl_multi_exec($mh, $active);
        } while ($mrc == CURLM_CALL_MULTI_PERFORM);

        while ($active && $mrc == CURLM_OK) {
            if (curl_multi_select($mh) != -1) {
                do {
                    $mrc = curl_multi_exec($mh, $active);
                } while ($mrc == CURLM_CALL_MULTI_PERFORM);
            }
        }

        //close the handles
        $content = curl_multi_getcontent($ch1);
        curl_multi_remove_handle($mh, $ch1);
        curl_multi_close($mh);

        return $content;
    }
}

?>